<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>js</title>
</head>
<frameset rows='50,*' frameborder='1' border='2px'><!-- frameborder为0时，边框不存在 -->
	<frame src='top.html'>
	<frameset cols='150,*'>
		<frame src='left.html' noresize> <!--设置noresize值，边框线不能拖动 -->
		<frame src='right.html'>
	</frameset>
</frameset>
</html>